|
|
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.